20779514 has 16 divisors (see below), whose sum is σ = 36155328. Its totient is φ = 8772192.

The previous prime is 20779489. The next prime is 20779531. The reversal of 20779514 is 41597702.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10139 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (2259708).

Almost surely, 2^20779514 is an apocalyptic number.

20779514 is a deficient number, since it is larger than the sum of its proper divisors (15375814).

20779514 is a wasteful number, since it uses less digits than its factorization.

20779514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22229.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 20779514 is about 4558.4552207957. The cubic root of 20779514 is about 274.9234563827.

The spelling of 20779514 in words is "twenty million, seven hundred seventy-nine thousand, five hundred fourteen".